US-20260124687-A1 - SPINDLE, ROUTER APPARATUS AND CUTTING BIT

Abstract

Provided is a spindle, a router device, and a cutting bit. The spindle may include: a spindle body having an internal space; a rotary shaft in the internal space, and having a receiving space configured to receive one end of a cutting bit, the cutting bit including a plurality of fastening portions spaced apart from each other in a longitudinal direction of the cutting bit and a plurality of cutting portions disposed between the plurality of fastening portions and configured to cut a substrate; and a support head at one end of the spindle body, and including a collet connected to one end of the rotary shaft and configured to selectively fasten at least one fastening portion among the plurality of fastening portions.

Inventors

• Jeongeun AHN
• Youngwan Kim
• Youngrock LEE
• Taehoon Lee

Assignees

• SAMSUNG ELECTRONICS CO., LTD.

Dates

Publication Date

20260507

Application Date

20250324

Priority Date

20241105

Claims (20)

1. 1 . A spindle, comprising: a spindle body having an internal space; a rotary shaft in the internal space, and having a receiving space configured to receive one end of a cutting bit, the cutting bit including a plurality of fastening portions spaced apart from each other in a longitudinal direction of the cutting bit and a plurality of cutting portions disposed between the plurality of fastening portions and configured to cut a substrate; and a support head at one end of the spindle body, and including a collet connected to one end of the rotary shaft and configured to selectively fasten at least one fastening portion among the plurality of fastening portions.
2. 2 . The spindle of claim 1 , wherein the support head includes at least two collets aligned in an axial direction of the rotary shaft and configured to correspondingly fasten at least two fastening portions among the plurality of fastening portions.
3. 3 . The spindle of claim 1 , wherein the support head includes a first collet and a second collet aligned in an axial direction of the rotary shaft and configured to correspondingly fasten any two fastening portions adjacent each other, among the plurality of fastening portions.
4. 4 . The spindle of claim 3 , wherein the first collet is disposed at a first end of the support head at one end of the spindle body, and the second collet is disposed at a second, opposite end of the support head.
5. 5 . The spindle of claim 3 , wherein the support head has an outer circumferential surface gradually decreasing in width or diameter from a first end of the support head to a second, opposite end of the support head.
6. 6 . The spindle of claim 1 , wherein the support head includes a rotary driving device connected to the rotary shaft configured to provide rotational force and an adjusting device configured to adjust fastening and releasing operations of the collet.
7. 7 . The spindle of claim 6 , wherein the rotary driving device includes a rotor in the internal space connected to the rotary shaft, and a bearing in the internal space and configured to support the rotor.
8. 8 . The spindle of claim 6 , wherein the adjusting device comprises a cylinder elevatable on the other end of the spindle body and configured to adjust the fastening and releasing operations of the collet; and an elastic member configured to elastically support the cylinder in the internal space and to provide elastic force so that the cylinder tends to return to an original position thereof.
9. 9 . A router device, comprising: a cutting region in which a substrate is cut into a plurality of unit substrates; a spindle including a rotary shaft having a receiving space configured to receive one end of a cutting bit, the cutting bit including a plurality of fastening portions spaced apart from each other in a longitudinal direction of the cutting bit and a plurality of cutting portions disposed between the plurality of fastening portions and configured to cut the substrate, and at least one collet configured to selectively fasten at least one fastening portion among the plurality of fastening portions, wherein the substrate is cut into the plurality of unit substrates using one of the plurality of cutting portions in the cutting region; an adjustment region in which a fastening portion among the plurality of fastening portions of the cutting bit is adjusted so that the at least one fastening portion is selectively fastened to the at least one collet; and a transfer robot configured to move the spindle between the cutting region and the adjustment region while moving the spindle in a height direction, wherein the spindle is connected to the transfer robot.
10. 10 . The router device of claim 9 , wherein a support table on which the other end of the cutting bit is disposed in the adjustment region.
11. 11 . The router device of claim 9 , wherein the spindle includes a first collet and a second collet at one end of the spindle, and aligned in an axial direction of the rotary shaft, and configured to correspondingly fasten any two adjacent fastening portions, among the plurality of fastening portions.
12. 12 . The router device of claim 11 , wherein the first collet and the second collet are spaced apart from each other in the axial direction of the rotary shaft.
13. 13 . The router device of claim 12 , wherein a separation distance between the first collet and the second collet is the same as a separation distance between any two adjacent fastening portions among the plurality of fastening portions.
14. 14 . The router device of claim 9 , wherein the router device comprises a rotary driving device connected to the rotary shaft and configured to provide rotational force, and an adjusting device configured to adjust fastening and releasing operations of the at least one collet.
15. 15 . The router device of claim 14 , wherein the rotary shaft is in an internal space of the spindle, and the rotary driving device includes a rotor and a bearing in the internal space with the rotor connected to the rotary shaft and the bearing supporting the rotor.
16. 16 . The router device of claim 15 , wherein the adjusting device comprises a cylinder elevatable on the other end of the spindle and configured to adjust the fastening and releasing operations of the at least one collet; and an elastic member between the cylinder and the bearing in the internal space and configured to provide elastic force so that the cylinder tends to return to an original position thereof.
17. 17 . A cutting bit, comprising: a plurality of fastening portions spaced apart from each other in a longitudinal direction and configured to be fastened to a collet of a spindle; and a plurality of cutting portions disposed between the plurality of fastening portions and configured to cut a substrate.
18. 18 . The cutting bit of claim 17 , wherein each of the plurality of fastening portions has an outer peripheral surface including at least one of a flat surface and an uneven portion.
19. 19 . The cutting bit of claim 17 , wherein two adjacent fastening portions among the plurality of fastening portions have the same separation distance.
20. 20 . The cutting bit of claim 17 , wherein each of the plurality of cutting portions includes a plurality of cutting ends arranged in the longitudinal direction.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S) This application claims benefit of priority to Korean Patent Application No. 10-2024-0155548, filed on Nov. 5, 2024 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety. BACKGROUND The present inventive concept relates to a spindle, a router apparatus, and a cutting bit used for cutting a substrate. In general, in order to improve production efficiency in a substrate manufacturing process such as a printed circuit board, a routing process, or the like, of cutting and separating an array board in which a plurality of printed circuit boards are arranged on a single panel into a plurality of individual printed circuit boards using a substrate cutting device such as a router device, or the like, may be performed. In the case of such a router device, a substrate is cut while a cutting bit is mounted on one end of a spindle, and a cutting portion of the cutting bit for cutting the substrate is a portion protruding from one end of the spindle by a certain length. When a service life of the cutting portion is completed, the cutting portion should be replaced with a new cutting bit. However, due to the cutting portion having a limited length of the cutting bit, the service life of the cutting bits is short, which causes a problem in that a replacement cycle thereof is shortened. SUMMARY An aspect of the present inventive concept is to provide a spindle for extending a replacement cycle of a cutting bit. An aspect of the present inventive concept is to provide a router device for extending a replacement cycle of a cutting bit. An aspect of the present inventive concept is to provide a cutting bit for extending a replacement cycle of a cutting bit. According to an aspect of the present inventive concept, provided is a spindle, the spindle including: a spindle body having an internal space; a rotary shaft in the internal space, and having a receiving space configured to receive one end of a cutting bit, the cutting bit including a plurality of fastening portions spaced apart from each other in a longitudinal direction of the cutting bit and a plurality of cutting portions disposed between the plurality of fastening portions and configured to cut a substrate; and a support head at one end of the spindle body, and including a collet connected to one end of the rotary shaft and configured to selectively fasten at least one fastening portion among the plurality of fastening portions. According to another aspect of the present inventive concept, provided is a router device, the router device including: a cutting region in which a substrate is cut into a plurality of unit substrates; a spindle including a rotary shaft having a receiving space configured to receive one end of a cutting bit, the cutting bit including a plurality of fastening portions spaced apart from each other in a longitudinal direction of the cutting bit and a plurality of cutting portions disposed between the plurality of fastening portions and configured to cut the substrate, and at least one collet configured to selectively fasten at least one fastening portion among the plurality of fastening portions, wherein the substrate is cut into the plurality of unit substrates using one of the plurality of cutting portions in the cutting region; an adjustment region in which a fastening portion among the plurality of fastening portions of the cutting bit is adjusted so that the at least one fastening portion is selectively fastened to the at least one collet; and a transfer robot configured to move the spindle between the cutting region and the adjustment region while moving the spindle in a height direction, wherein the spindle is connected to the transfer robot. According to another aspect of the present inventive concept, a cutting bit may include: a plurality of fastening portions spaced apart from each other in a longitudinal direction and configured to be fastened to a collet of a spindle; and a plurality of cutting portions disposed between the plurality of fastening portions and configured to cut a substrate. BRIEF DESCRIPTION OF DRAWINGS The above and other aspects, features, and advantages of the present disclosure will be more clearly understood from the following detailed description, taken in conjunction with the accompanying drawings: FIG. 1 is an example diagram illustrating a router device according to example embodiments of the present inventive concept; FIG. 2 is an example diagram illustrating a spindle used in a router device according to example embodiments of the present inventive concept; FIG. 3 is an example diagram illustrating a cutting bit according to example embodiments of the present inventive concept; FIG. 4 is an example diagram illustrating a fastening structure of a support head of a spindle and a cutting bit according to example embodiments of the present inventive concept; FIGS. 5 to 9 are example diagrams illustrating